The Public transport and micromobility roles, particularly electric scooters (e-scooters), are increasingly recognised as pivotal for sustainable urban mobility when integrated rather than made to compete. Cognitive mobility behaviour—how individuals select and combine transport modes—was examined through a systematic literature review, traffic counts conducted at peak-hour junctions, and an online survey of residents’ travel habits in Győr, Hungary. It was found that 46% of trips are made by private car, 24% by public transport, 8% by bicycle, 22% on foot, and only 1–3% by e-scooter. E-scooters were observed to be primarily used for short trips and first/last-mile connections, and reductions in car dependence were noted when e-scooters were integrated with public transport. The survey revealed that e-scooters most often replace walking (42%) and public transport (36%), with limited substitution of private car trips (13%). Significant gaps were identified in multimodal integration, infrastructure, legal frameworks, traffic monitoring, and public awareness. It is recommended that multimodal hubs, dedicated e-scooter lanes, improved traffic counting, and clearer regulations be implemented to support modal shift, enhance safety, and maximise environmental benefits.